Nose hair can block dust and bacteria in the air, so that the human body can inhale filtered clean air. At the same time, the function of nasal cilia can also make some bacterial mucus enter the stomach and kill bacteria with gastric acid.

(2) Nose hair can keep the temperature of nasal mucosa, and it can also keep nasal mucosa moist without directly inhaling cold air into trachea, thus preventing dry or atrophic rhinitis and epistaxis.

(3) Nose hair can protect the olfactory nerve from being damaged, so that the nose can smell all kinds of smells, and can smell the smell of food and enhance appetite.

It can be seen that the role of nose hair is not small, so it should be protected. Don't trim it at will, especially don't pull it out, otherwise it will cause nasal vestibulitis and recur for a long time. In addition, after plucking or trimming nose hair, nose hair will still grow out, so people who have the habit of plucking nose hair had better quit as soon as possible.

1 As mentioned above, nose hair has the function of blocking bacteria/dust. When the protective barrier of nose hair disappears, bacteria may directly enter the lower respiratory tract, causing pneumonia and bronchitis.

2. Hair follicle damage after nose hair removal can cause nasal furuncle, which is located in the danger triangle. After extrusion, bacteria/pus infiltrated into cavernous sinus, resulting in high mortality of intracranial complications (cavernous sinus thrombophlebitis).

3. The tools used to trim nose hair are not clean, which may lead to nasal mucosal bleeding and nasal infection unintentionally.

It can be seen that although the nose hair is not very beautiful and needs to be trimmed frequently, it also has its own function. If it is not carefully trimmed, it is easy to damage the nasal cavity.